You can buy gift cards for Total Rewards which is Caesars Entertainment's casino players program. Then they could use the gift card for meals, hotel room, drinks, shows, or the gift shop. MGM Resorts also has gift cards for sale. You can get free MGM Resorts gift cards with AMEX points as well; I did that on my last visit to Las Vegas which is how I paid to see a Cirque du Soleil show at the MGM Grand.